could unstitch
Verbo regular: unstitch - unstitched- unstitched

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could unstitch
you could unstitch
she could unstitch
we could unstitch
you could unstitch
they could unstitch 	I could be unstitching
you could be unstitching
she could be unstitching
we could be unstitching
you could be unstitching
they could be unstitching	I could have unstitched
you could have unstitched
she could have unstitched
we could have unstitched
you could have unstitched
they could have unstitched	I could have been unstitching
you could have been unstitching
she could have been unstitching
we could have been unstitching
you could have been unstitching
they could have been unstitching	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't unstitch
you couldn't unstitch
she couldn't unstitch
we couldn't unstitch
you couldn't unstitch
they couldn't unstitch 	I couldn't be unstitching
you couldn't be unstitching
she couldn't be unstitching
we couldn't be unstitching
you couldn't be unstitching
they couldn't be unstitching	I couldn't have unstitched
you couldn't have unstitched
she couldn't have unstitched
we couldn't have unstitched
you couldn't have unstitched
they couldn't have unstitched	I couldn't have been unstitching
you couldn't have been unstitching
she couldn't have been unstitching
we couldn't have been unstitching
you couldn't have been unstitching
they couldn't have been unstitching	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I unstitch?
could you unstitch?
could she unstitch?
could we unstitch?
could you unstitch?
could they unstitch? 	could I be unstitching?
could you be unstitching?
could she be unstitching?
could we be unstitching?
could you be unstitching?
could they be unstitching? 	could I have unstitched?
could you have unstitched?
could she have unstitched?
could we have unstitched?
could you have unstitched?
could they have unstitched? 	could I have been unstitching?
could you have been unstitching?
could she have been unstitching?
could we have been unstitching?
could you have been unstitching?
could they have been unstitching? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I unstitch?
couldn't you unstitch?
couldn't she unstitch?
couldn't we unstitch?
couldn't you unstitch?
couldn't they unstitch? 	couldn't I be unstitching?
couldn't you be unstitching?
couldn't she be unstitching?
couldn't we be unstitching?
couldn't you be unstitching?
couldn't they be unstitching? 	couldn't I have unstitched?
couldn't you have unstitched?
couldn't she have unstitched?
couldn't we have unstitched?
couldn't you have unstitched?
couldn't they have unstitched? 	couldn't I have been unstitching?
couldn't you have been unstitching?
couldn't she have been unstitching?
couldn't we have been unstitching?
couldn't you have been unstitching?
couldn't they have been unstitching?